Siemens 353 - Acs - Arccosine

UM353-1B Function Blocks
April 2012
3-9
3.2.2 ACS - ARCCOSINE
ACS_ function blocks accept an input between -1.0 and 1.0. Each
provides an output signal in radians of which the input is the
cosine.
3.2.3 ADD_ - Addition
ADD_ function blocks perform arithmetic addition on
three input signals. Any unused input will be set to 0.0
and will have no affect on the output.
All inputs should have the same engineering units. If
units are not consistent, an SCL (Scaler) function block
can be used or an alternative is to use a MATH function
block that has built-in scaling functions.
BLOCK DIAGRAM
A
O1
B
C
+
+
+
.
.
Rev 2
Input
X
ARCCOSINE
O1
O
utput
1
O
1
= ACOS (X)
ACS
ESN =
000
X
E
E
xec.
S
eq.
N
o. ..................... 000 to 250 (000)
X
T
U
P
N
I
INPUT X
..............
loop tag.block tag.output (null)
SN
BLOCK DIAGRAM
O1X
Input
X
O
utput
1
.
.
ACOS (X)
Input
A
ADDITION
O1
O
utput
1
ADDITION
ADD_
ESN =
000
A
ESN
E
xec.
S
eq.
N
o.
(H)
............... 001 to 250
C
TU
P
N
I
INPUT B
(H)
.........
loop tag.block tag.output (null)
Input
B
B
B
TU
P
N
I
INPUT C
(H)
.........
loop tag.block tag.output (null)
Input
C
C
A
TU
P
N
I
INPUT A
(H)
.........
loop tag.block tag.output (null)